Bolster for railway-cars.



to make and use the same, reference being NTTED STATES Fries.

PATENT GEORGE I. KING, OF DETROIT, MICHIGAN, ASSIGNOR TO THE AMERICAN CAR & FOUNDRY COMPANY, OF ST. LOUIS, MISSOURI.

BOLSTER FOR RAILWAY-CARS.

SPECIFICATION forming part 0f Letters Patent N0. 678,886, dated July 23, 1901.

Application filed November 23, 1900. Serial No. 37,450. (No model.)

To all whom t may concern:

Be it known that I, GEORGE I. KING, a citizen of the United States, residing at the city of Detroit, in the countyf Wayne, State of Michigan, have invented a certain new and useful Improvement'in Bolsters for Railway- Cars, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains had to the accompanying drawings, forming part of this specification, in which- Figure l is a top plan view of my im proved bolster. Fig. 2 is an elevational view. Fig. 3 is a bottom plan View. Fig. 4 is a sectional View on line et 4, Fig. 2; and Fig. 5 is a sectional view on line 5 5, Fig. 2.

This invention relates to a new and useful improvement in holsters for railway-cars, being designed particularly for use in connection with cars made up of pressed or structural steel form, although it is obvious that said bolster can be used in wooden cars.

In the drawings, A indicates the centersills, which center sills are preferably channels, said center. sills forming the strut members of my improved bolster'.

B indicates the top cover-plate, which is riveted to the center sills as at b, said coverplate being the tension member of my iinproved bolster.

C indicates the bottom cover-plate, which is riveted to the bottom flanges of the center sills, said bottom cover-plate, as well as the top cover-plate, extending laterally almost to the extremities of the bolster.

D indicates a casting arranged between the center sills, said casting being provided with a hollow boss for the reception of the kingbolt EA of the truck.

F indicates the center bearing, riveted to the bottom plate and to the castingD, and G indicates the side bearings, which are riveted to the bottom cover-plate.

H indicates web-plates, which are preferably sheared to the. proper shape, so.as to have the bolster deepest at its middle portion. These web-plates are connected to the center sills by angle or corner connection-plates h and to the side sills of the car or the side plates of the car by angle or corner connecf tion-plates 72.

as shown in Fig. 4E, may be of such width as to fit between the flanges of the angles h, or, as shown in Fig. 5, they may be wide enough to span the vertical flanges of said angles h", in which event a filler will be employed. It is obvious, however, that these connection-plates 7L can be bent to accommodate the vertical iianges of the angles h, whereby the use of filler-plates above referred to may be dispensed with. In order to aiford a secure fastening between the web-plates and the top and bottom cover-plates, I arrange angles h along the upper and lower edges of the Web-plate H, whose vertical legs are riveted to the top and bottom cover-plates. Where the side sill of the car is in the form of a metallic member having inwardly-presented flanges. both the top and bottom angles h can be extended out to the ends 'of the web-plate, so that rivets may be passed through their horizontal legs and the side sill. It will of course be understood that the ends of the bolster may be shaped to suit different conditions and to accommodate the bolster to various methods of fastening which may be employed therebetween and the side sills or the side plates of the car. Instead of having angles h" on each side of the web-plate, as shown in the drawings, it is obvious that this web-plate can be flanged over for the passage of the vertical rivets on one side, while the other side of the web-plate will be secured by a single angle h.

It is not absolutely necessary that the webplates abut snug against the center sills nor that they should be of the exact length to abut against the side sill or the side plate of the car, as the connection angles or plates take care of inequalities of this character.

It will be observed that as an entirety the bolster follows practically the lines of a plategirder structure, the center sills serving to strengthen the same considerably, while the top plate forms the tension flange of the girder and the bottom plate the compressionflange when the load is applied at the ends of the web-plates H.

I am aware that minor changes in the arrangement, construction, and combination of the several parts of my device can be made These con nection-plates 7L',V

IOO

and substituted for those herein shown and described without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

In a bolster, the combination with channel center sills having flanges projecting inwardly therefrom, and plain outer surfaces, top and bottom plates, Web plates extending outwardly from the plain sides of the center sills, said plates at their inner ends being of a depth coincident with that of the center sills, L.- angles riveted along the top edge of the webplates, said angles being regular throughout and occupying a horizontal plane in alinement with the upper surfaces of the center sills, means for securing lthe top plate to the flanges of the angles, corresponding L-angles vriveted along the bottom edges of the plates 

